Home / 1,288,612.64-1,932,906.65-783,313.16

Finding the Fourth Proportional to 1,288,612.64, 1,932,906.65 and 783,313.16

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Solution

The fourth proportional to 1,288,612.64, 1,932,906.65 and 783,313.16 is: 1,174,962.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,612.64 : 1,932,906.65 = 783,313.16 : x
  2. Step 2: Convert to fraction form
    1,288,612.64/1,932,906.65 = 783,313.16/x
  3. Step 3: Cross multiply
    1,288,612.64x = 1,932,906.65 × 783,313.16
  4. Step 4: Simplify right side
    1,288,612.64x = 1,514,071,208,290.26
  5. Step 5: Solve for x
    x = 1,514,071,208,290.26/1,288,612.64
  6. Step 6: Final answer
    x = 1,174,962.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.